The IsVBSReady function determines if the client browser is capable of using
client-side VBScript. Returns True if the browser supports VBScript or False if
it does not. If the system cannot determine the VBScript readiness of a browser,
IsVBSReady returns Null.

Syntax:

boolean = IsVBSReady()

Example Usage:

<%
dim a
a = IsVBSReady
if a then
' browser supports client-side vbscript
elseif not a then
' browser doesn't support client-side vbscript
elseif IsNull( a ) then
' browser vbscript support is unknown
end if
%>